MANUFACTURE OF HIGH CONTACT-FATIGUE STRENGTH GEAR

Title:

MANUFACTURE OF HIGH CONTACT-FATIGUE STRENGTH GEAR

Document Type and Number:

Japanese Patent JPH06246548

Kind Code:

A

Abstract:

PURPOSE: To improve the contact-fatigue strength of a gear used for a driving transmission system such as the transmission of an automobile.

CONSTITUTION: In this method of manufacturing a high contact fatigue strength gear, gear cutting is applied to mechanical structure steel, and after surface hardening by carburizing and/or nitriding and quenching-tempering, the tooth surface is barrel-polished into 0.3μm to 2μm in roughness (Rmax). The contact- fatigue strength is thereby improved by several hundred percents.

Inventors:

FUSADA HIDEHIKO
TATEYAMA MICHIAKI
KATAYAMA AKIRA

Application Number:

JP3582793A

Publication Date:

September 06, 1994

Filing Date:

February 24, 1993

Export Citation:

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Assignee:

NIPPON STEEL CORP

International Classes:

B23F19/00; B23P15/14; B24B31/00; (IPC1-7): B23P15/14; B23F19/00; B24B31/00

Attorney, Agent or Firm:

Tomoyuki Yathata (1 outside)

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